Karl august blystad



K. A. BLYSTAD. RUNNER FOR VEHICLES. APPLICATION man my n. 1 910.

Patented Sept, 9, 1919..

UNITE srnrns rATENr onrron. I

' KARL AUGUST BLYSTAD, or Konesvinenn, NORWAY.

RUNNER ron VEHICLES.

l Specification of Letters Patent.

Application filed May 17, 1918. Serial No. 235,184.

For the driving 1n 1notor-actuated car riages, automobiles and the hke,on snow runners have been proposed and also used instead of theforewheels, or runners have been mounted under the said wheels, in orderthat the automobile may run more easily. This invention relates to animprovement in the said runners whereby when driving on loose snow theyeffect a groove of packed snow, in whiclrthe rear wheels or the drivlngwheels find a hold more reliably and consequently donot slide so easily.This is gained by providing in the fore part of the runner, which iscurved upward, a preferably concave groove, extending longitudinally ofthe runner and substantially to the straight part of the same or, it maybe, for a distance along the same. While the automobile is forcedforward the said groove prevents the snow from belng dispersed towardthe sidesv of the runner but gathers the snow to a round, which is thenpacked by the straight part of the runner, so that the groove effectedin the snow by the runner has a more compact bot tom, which the drivingwheel may engage. In order to prevent the snow located at the sides ofthe said groove from wearing out the side parts of the tire of thedriving wheel, the fore part of the runner is provided with lateralwings, flanges or projections, which preferably extend along the curvedpart of the runner and flatten or force down the snow located at thesides of the runner.

In the accompanying drawing a runner is shown arranged in accordancewith this invention. Figure 1 is a side view and Fig. 2 a bottom planview of the runner. Figs. 3, 4 and 5 are sections on the line 3-8, 4-4and 55 respectively of Fig. 1.

The runner shown in the drawing and.

adapted to be substituted for the fore wheels of an automobile isprovided with spokes and a hub, so that it can be slid on the The runneris trunnion of the said wheel. held in its position on the said trunnionby AUGUST BLT- sequent straight part of the runner.

chains or the like in the ordinary manner which chains are fixed to thefore and rear parts of the runner and tothe frame of the autoniobllepreferably in a yielding manner.

P tented Sept. 9, 1919.

According to this invention the fore curved part 1 of the runner has alongitudinal cavity or concave groove 2,wh1ch extends substantially tothe vicinity of the straight part 3 of the runneror for some distancealong the same. As the automobile runs on loose snow the said groove 2prevents the snow from being dispersed toward the sides of the runnerbut instead it gathers the snow to a round, which is then packed by thesub- Consequently, the groove effected by the runner gets accompactbottom, which the rear or driving wheel may engage in a reliable man.-

neru The shape of cross section of the groovefl may evidently differfrom that shown in the drawing. If the driving wheel is double (as isthe case in freight wagons) the width of the runner is adapted thereto.

In order that the snow located at the sides of the groove effected bythe runner niay neat wear out the tire of the wheel the said runner isprovided with lateral wings,

flanges or projections 1, located on the curved part 1 of the runner.The said wings, which extend substantially to the connection between thecurved part and the straight part of the runner, press and flatten downthe snow at the sides of the runner for such a width, that the parts ofthe tire, located at opposite sides of the center part of thetireengaging the snow, do not come into contact with the snow andconsequently are not subjected to wear effected by the snow, whichotherwise is considerable especially in hard snow. The said wings alsoassist the runner in sliding upward on drifts. i

The cross section of the top part of the runner is, preferably,substantially triangular, as shown in Fig. 5 in order that the runnerlike a plow may force its way through drifts.

In order that the runner may slide easily on hard snow or on ice, it maybe provided with a narrower central part or rib 5, in which a'centralgroove 6 may be provided, which extends longitudinally of the runner andrenders more safe the running of the carriage. vents the automobile fromsliding sidewise.

For the driving in very deep snow and in The said central rib 5 alsopre- V drifts the curved fore part of the runner may be extended upwardand forward by means of a part 7, (shown by fulllines in Figs. 1 and 2)suitably curved and, it may be, provided with a groove or ridge, thesaid partb eing fixed by means of screws 8 or in any other detachablemanner.

Having now described my invention, what I claim as new and desire tosecure by Lettersv Patent is 1. A'front sleigh runner for vehiclescomprising a linear portion having a centrally disposed, longitudinallyextending rib on groove, and an upwardly curve portion having a concavegroove formed in its under side for a portion of 1ts length and adepending ridge on'the remaining portlon, and

laterally disposed wings secured to the sides of the upper curvedportion and coextensive in length therewith.

3. A front sleigh runner for vehicles coin- )rising a linear portionhaving a centrally disposed, longitudinally extending rib on its underside, said ribbeing formed with a groove, and an upwardly curved portionhaving a concave groove formed in its under side for a portion of itslength, and a depending rib on the remaining portion, and laterallydisposed wings secured to the sides of the upper curved portion, and acurved extension detachably secured to the forward end of said runner,and a centrally disposed ,rib formed on said extension forming acontinuation of the rib on said runner.

4. A front sleigh runner for vehicles comprising a rear lineal portionand a forward upwardly curved portion having a concaved under side, andlaterally disposed wings secured to said curved portion.

In witness whereof I have hereunto signed my name.

KARL AUGUST BLYSTAD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

